Perfect light weight mesh jacket. I love the liner too! I have yet to use it with the vest liner. I’ll wear it with the jacket liner in the morning and take it out and toss it in a saddle bag in the afternoon for the lovely New England spring days. I will likely wear it all summer. I’m a most of the gear most of the time kind of gal. I’m a women's medium (between 4-8 both tops and bottoms), 5’4, 150 lbs. I have a size Large and it fits perfectly and I could layer underneath but I haven’t had to yet!